Nebulous means:
* Vague or unclear: It lacks a definite form or shape, making it hard to understand or define.
* Indistinct: It's hazy or misty, like a nebula in space.
* Uncertain: It's not clear or specific, leaving room for different interpretations.
Here are some examples:
* "The company's plans for the future are nebulous."
* "His explanation of the situation was nebulous, leaving me with more questions than answers."
* "The outline of the project was nebulous, making it hard to see how it would be implemented."